Wrench.



J. 1"; WRIGHT.

WRENCH. i APILIUATIOH FILED OUT. 8, 1910.

981,234. Patented .1m 10,1911.

rus Hamers PETERS col. wglsluNaroN, D. r:4

f UNITED sTATEs PATENT oEEioE.

Yminne F. WRIGHT, or CANTON, oHIo.

fTo all 'whom 'it may concern:

Be it known that I, JAMES F. WRIGHT, a

citizen ot' the United States, and a resident of Canton, in the county of Stark and State fof Ohio, have invented a new and useful Imrfprovement in Wrenches, of which the fol- -lowing is a full, clear, and exact description 'gef the same. v

The object of the present invention is to Qprovide an improved wrench which is sim- ;'ple in construction and durable. l Another object is to so construct the parts that the wrench can be quickly adjusted so `as to be applied to different sized pipes or f objects upon which the wrench is to be apf plied.

Still another Objectis to so construct the 'wrench that when the same has been adjusted or more specically the jaws adjusted `they will be iirmly held against relative movement when strain is brought upon the jaws.

Another object is to so arrange the parts l that when strain or pressure is brought the strain will be so distributed that it will come upon the stronger parts oit' the wrench, thereby preventing any springing or bending ot the wrench proper.

These objects together with other objects readily apparent to those skilled in the art, I attain by the construction illustrated in the accompanying drawing, although my invention may be embodied in a variety of other mechanical forms, the construction f illustrated being chosen by way of example.

Figure l is a perspective view of the im proved wrench. Fig. 2 is a bottom or underside view of the combined shank and handle. Fig. 3 is a vertical section of the yoke showing the different parts properly connected and the jaws held or locked against relative movement. Fig. l is a similar view showing the jaw end of the combined rock arm or shank elevated with reference to the fixed jaw, shank and handle. Fig. 5 is a similar view to Figs. 3 and 4L except the corresponding parts inl all the figures of th? drawing.

In the accompanying drawing, 1 represents the combined shank and handle to WRENCH.

Specification of Letters Patent.

VPatented J an. 10, 1,911.

Application led October l8, 19ML Serial No. 585,972.

which is attached in the usual manner the jaw 2. Upon the combined shank and han' dle 1 is slidably mounted the yoke 3, which yoke is for the purpose of assisting in holding in proper relative position the combined shank and handle 1 and the rock-bar and shank 4, which rock-bar and shank is provided with the jaw 5. The yoke 3 is provided with the loop or strap portions 6 and 7, said loop or strap portions being spaced from each other substantially 'as illustrated in the drawing. The loop or strap portions 6 and 7 are for the purpose of holding the combined rock-bar and shank i in proper alinement with the combined handle and shank 1.

For the purpose of providing means for moving the yoke 3 and the rock-bar 4; in unison back and forth upon the combined shank and handle 1, said rock-bar is pivotally connected to the loop or strap portion G of the yoke 3. The rock-bar 4 is eX- tended rearward through and under the loop or strap 7 and the end adjacent the loop T provided with the shoulder 9, the face of which shoulder is designed and calculated to come in contact with the loop or strap 7 when strain is brought upon the jaws 2 and 5. Between the rock-bar a the top of the combined handle and shank 1 is located the spring 10, which spring may be attached to the rock-bar 4t and is for the purpose of normally holding the rear end of the rock-bar 4f up and away from the top face of the handle or shank 1 and also holding the rear end or portion of the yoke 3 up so that its bottom rear end or portion will come in engagement and contact with the underside of the combined handle and shank 1. IVhen it is desired to adjust the jaws of the wrench the yoke 3 is rocked as hereinafter described. As the rear portion of the yoke 3 is moved downward by pressure tlie'rear bottom of said yoke is moved away from the handle or' shank 1 or in the position illustrated in Fig. 5 and when in such position the teeth 12 formed upon the upper face of the bottom of the yoke 3 are disengaged from the teeth 13 formed in the bottom or underside of the handle or shank i, thereby permitting vthe handle or shank to be moved longitudinally in either direction with reference to the yoke 3 and the rock-bar 4. In some instances it is desirable to rock the bar t independent of the yoke 3 and when so rocked the yoke 3 is not released as against sliding movement upon the handle or shank 1, but when it is de-x sired to release the yoke, said yoke must be rocked upon its pivotal point and brought into the position illustrated in Fig. 5.

For the purpose of providing for the rocking movement of the rock-bar and shank 4, the rear portion of said rock arm or that portion of the rock-bar at the rear of the pivot 11 is inclined upward so as to provide room to allow the rear portion to be brought down to the upper face of the combined shank and handle 1. The rockbar 4 should be so constructed that, that portion of-the rock-bar just below the pivot 11 will come in contact with the upper face of the combined handle and shank 1 so that the strain may be partially removed from the pivot 11.

For the purpose of providing or allowing for the rocking movement of the yoke 3 and the rock-bar 4 either in unison or independently, said rock-bar is provided with the concaved recess 14, into which recess is seated the convex face 15 formed upon the loop or strap 6.

For the purpose of removing the strain from the pivot or more specifically the rivet 11 the shoulder 9 is provided, which shoulder is so located that it will come in contact with the loop or strap 7, which loop or strap 7 is formed integral with the yoke 3 and as strain is brought upon the jaws 2 and 5 the shoulder 9 will come in contact with the loop 7, thereby removing the strain from the rock bar to the heavier and better adapted part to carry the strain` to-wit: the yoke 3, owing to the fact that the strain will be longitudinal with or in alinement with the rock-bar 4.

For the purpose of preventing any binding action of the yoke 3 during the time it is rocked or moved to its different positions, said yoke is provided with the contact rib 1G, which rib comes upon the smooth surfaces 17 located upon opposite sides of the teeth 13.

In order that there may be no accidental displacement of the rock-bar 4 with reference to the handle or shank 1 during the time the wrench is being adjusted or at any other time the jaw 2 is provided with the upward extended flanges 18, which flanges are spaced a distance equal to the thickness of the portion of the flange 19 of the rock-bar 4, which portion or flange 19 is located between the flanges 18 as best illustrated in Fig. 6.

It will be understood that by providing means whereby the rock-bar 4 can be rocked upon its pivotal point independent of the yoke that the jaws can be released or freed from the pipe upon which they are seated without. releasing the yoke 3 from the shank or handle 1. This is in some instances dcsrable, owing to the fact that the jaws are easilyand quickly released without interfering in any way with the fixed adjustment of the jaws 2 and 5. By providing means for rocking the yoke 3 and the rock-bar 4 simultaneously when so desired the jaws can be quickly-adjusted to and from each other,

`Ythereby providing means for bringing the jaws into position for different sized pipes upon which the wrench is to be appl1ed,. or other objects. Then the yoke 3 'and the'I rock-bar 4 are rocked simultaneously the rib 16 forms a fulcrum for the rocking movement of the yoke 3, thereby, causing the loop or strap 6 to follow the arc of a circle, but when the rock-bar 4 is rocked independently it moves upon the rivet 11V and by providing the concaved recess 14 and seating the convexed face 15 formed upon the strap 6 provision is made for the independent rocking of the rock-bar 4 and also rocking or oscillating movement of the Having fully described my invention what l claim as new and desire to secure by Let-- ters Patent, is-

1. In a wrench of the class described, the combination of' acombined handle and C shank provided with a jaw, a rock-bar provided with a jaw and a shoulder, said jaw Q and shoulder located at the ends of the i rock-bar, the edge of' the rock bar adjacent the shoulder being beveled tol a point below the connection between the rock bar and a l yoke, whereby said edge will be in contact with the upper surface of the shank irref spective of its tilted position, ak voke'connected to the rock-bar and adapted to em brace said rock-bar and shank, said yoke provided with spaced loops, one of said loops pro vided with a convexed face and the 1 rock bar provided with a recess and the convex face adapted to be seated in the recess, the shoulder on the rock bar engaging the other loop irrespective of the position to which said rock bar is tilted, a spring interi posed between the rock-bar and the handle shank, and means for holding the yoke and rock-bar against longitudinal movement upon the shank substantially as and for the purpose specified. i

2. In a wrench of the class described, the combination of a combined handle and shank provided with a fixed jaw, a yoke slidably mounted upon' said handle and shank, said yoke provided with spaced loops 1 and a rib adapted for contact with the underside of the shank, a rock-bar provided with a jaw, said rock-bar pivotally mounted in the yoke and adapted to move upon its pivotal point independently of the pivotal i movement of the yoke, said rock-bai` provided with a shoulder, said shoulder adapted at all times to engage one of the loops of the yoke, the lower edge of the yoke from a point below the pivot to the shoulder being 1 l i l l l l jgfween the rock-bar and sha-nk and means for `ifiolding the rock-bar and yoke against longi- 'judinal movement upon the shank substanially as and for the purpose specified.

3. In a wrench of the class described, the rombination of a handle and shank, said lhank provided with a jaw, a rock-bar pro- 'ided with a jaw, said rock-bar provided jvith a recess upon its upper face, a yoke -Brovided with spaced loops, one of the loops lLdapted for contact with the recess formed n the rock-bar, said yoke and rock-bar op- )ratively connected together and each ffdapted to rock independently of the other,

,he rock-bar provided with a shoulder at all nues in engagement with one of the loops if the yoke, and a spring interposed bey"ween the shank and rook bar substantially and for the purpose specified.

" il. In awrench of the class described, the frombination of a handle and shank, said hank provided with a jaw, a rock-bar pro- .'ided with a jaw, said rock-bar provided .vith a recess upon its upper face, a yoke `)rovided with spaced loops, one of the loops idapted for Contact with the recess formed n the rook-bar, said loop and rock-bar piv- )tally connected together and each adapted o rockindependently of the other, the rock- Jar provided with a shoulder at all times in engagement with one of the loops of the yoke, the lower edge of the yoke from a point below the pivot to the shoulder being beveled whereby it will contact with the u pper surface of the' shank irrespective of its tilted position, a spring interposed between the shank and rock-barl and means for holding the yoke and rook-bar aga-inst longitudinal movement upon the shank substantially as and for the purpose specified.

5. In a wrench of the class described, the combination of a handle and shank and a rock-bar, said handle and shank provided with a jaw, a yoke provided with spaced loops and a rib, said rib adapted to Contact with the shank, said'roclvbar and yoke operatively connected together and each adapted to rock upon the shank, means for preventing longitudinal movement of the yoke and rock bar upon the shank and a shoulder located upon the rock-bar and at all times in Contact with one of the loops of the yoke and means for normally holding the shoulder in engagement with said loop substantially as and for the purpose speci- Hed.

In testimony that I claim the above, I have hereunto subscribed my name in the presence of two witnesses.

Ii-DIES F. WRIGHT Witnesses F. IV. Bom), Svrlvm Bonos. 

